Steel ladle oxygen-fuel combustion vertical baking device

Abstract

The utility model relates to the technical field of steelmaking equipment, in particular to a steel ladle oxygen-fuel combustion vertical baking device which comprises a base used for placing a steel ladle, a support arranged on one side of the base, an adjusting cantilever arranged on the top of the support, a baking assembly installed at the tail end of the adjusting cantilever and comprising a sealing cover and a burner. A baffle used for installing a burner is arranged on the lower portion of the sealing cover, a driving device used for driving the baffle to move longitudinally is arranged on the upper portion of the sealing cover, the driving device is used for driving the baffle to ascend and descend, then the height of the burner is adjusted, preheating work of different areas of a steel ladle is completed, and preheating work is better conducted through combustion heat energy. The preheating efficiency is improved, meanwhile, fuel is saved, and steel ladles of different specifications can be preheated.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking equipment, and particularly relates to a vertical baking device for full-oxygen combustion of ladles. Background Art

[0002] In the iron and steel industry, the baking of ladles and hot metal ladles is an important link to ensure the smooth progress of steel production. The baking process not only requires rapid heating, but also needs to ensure uniform temperature inside the ladle to improve the quality and production efficiency of molten steel. Traditional baking devices mostly use air-assisted combustion, which has problems such as low combustion efficiency, long preheating time, and high energy consumption, and it is difficult to meet the requirements of modern steel production for high efficiency, energy conservation, and environmental protection.

[0003] In response to the above problems, the industry has been continuously exploring new baking technologies and devices. Among them, the vertical baking device for full-oxygen combustion of ladles has gradually attracted attention due to its unique advantages. This device uses full-oxygen combustion technology, and through the full mixing of high-purity oxygen and fuel, efficient combustion is achieved, significantly improving the baking efficiency. At the same time, this device also has the function of adjusting the distance between the nozzle and the bottom of the ladle. This innovative design further improves the preheating efficiency, bringing significant economic and environmental benefits to steel production.

[0004] Full-oxygen combustion technology refers to using high-purity oxygen (usually with an oxygen content of more than 90%) as the combustion-supporting gas, which is fully mixed with fuel and then burned. Compared with the traditional air-assisted combustion method, full-oxygen combustion has the significant advantages of high combustion efficiency.

[0005] However, due to the distance between the nozzle and the bottom of the ladle, temperature differences will occur in different areas of the ladle during the baking process, resulting in insufficient local baking temperature, especially the baking temperature at the bottom of the ladle is insufficient, affecting subsequent production and use. Summary of the Utility Model

[0006] In order to solve the above problems, the embodiments of the utility model provide a vertical baking device for full-oxygen combustion of ladles that can adjust the distance between the nozzle and the bottom of the ladle.

[0007] The embodiments of the utility model specifically adopt the following technical solutions to achieve the above purpose: a vertical baking device for full-oxygen combustion of ladles, including a base for placing the ladle, a bracket is arranged on one side of the base, an adjusting cantilever is arranged at the top of the bracket, a baking assembly is arranged at the end of the adjusting cantilever, the baking assembly includes a sealing cover and a burner, a baffle for installing the burner is arranged at the lower part of the sealing cover, and a driving device for driving the baffle to move longitudinally is arranged at the upper part of the sealing cover.

[0008] As a further improvement of the above technical solution:

[0009] The driving device includes a driving motor, and a driving gear is arranged at the output end of the driving motor. At the upper part of the baffle, a screw rod and a guide rod extending above the sealing cover are arranged, and a lifting sleeve cooperating with the driving gear is arranged on the screw rod.

[0010] A thread cooperating with the screw rod is arranged on the inner side wall of the lifting sleeve, and a driven gear meshed and connected with the driving gear is arranged on the outer side wall.

[0011] The number of the guide rods is multiple, and they are evenly distributed along the circumferential direction of the baffle.

[0012] An insulating body is arranged at the upper part of the baffle. The insulating body is hemispherical, and an annular extension plate is arranged at the edge position of the insulating body.

[0013] A receiving chamber is arranged at the lower part of the sealing cover, and a concave matching the shape of the insulating body is arranged at the top of the receiving chamber.

[0014] The beneficial effect of the embodiment of the present utility model is as follows: The vertical baking device for all-oxygen combustion of ladle includes a base for placing a ladle. A bracket is arranged on one side of the base, an adjusting cantilever is arranged at the top of the bracket, a baking assembly is installed at the end of the adjusting cantilever. The baking assembly includes a sealing cover and a burner. A baffle for installing the burner is arranged at the lower part of the sealing cover, and a driving device for driving the baffle to move longitudinally is arranged at the upper part of the sealing cover. The driving device drives the baffle to lift, thereby adjusting the height of the burner, and then completing the preheating operation of different areas of the ladle, making better use of the combustion heat energy for the preheating operation, improving the preheating efficiency while saving fuel, and being able to preheat ladles of different specifications. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 It is a sectional view of the present utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the baffle in the present utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the sealing cover in the present utility model.

[0019] In the figure: 1. Base; 2. Bracket; 3. Adjusting cantilever; 4. Sealing cover; 5. Burner; 6. Baffle; 7. Driving motor; 8. Driving gear; 9. Screw rod; 10. Guide rod; 11. Lifting sleeve; 12. Driven gear; 13. Insulating body; 14. Annular extension plate; 15. Receiving chamber. Detailed Embodiment

[0020] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model.

[0021] As Figures 1-4 shown, the ladle full-oxygen combustion vertical baking device of this embodiment includes a base 1 for placing the ladle. A bracket 2 is provided on one side of the base 1. An adjusting cantilever 3 is provided at the top of the bracket 2. A baking assembly is installed at the end of the adjusting cantilever 3. The baking assembly includes a sealing cover 4 and a burner 5. A baffle 6 for installing the burner 5 is provided at the lower part of the sealing cover 4. A driving device for driving the baffle 6 to perform longitudinal displacement is provided at the upper part of the sealing cover 4. The driving device drives the baffle 6 to lift, thereby adjusting the height of the burner 6, and then completing the preheating operation of different areas of the ladle, making better use of the combustion heat energy for the preheating operation, improving the preheating efficiency while saving fuel, and being able to preheat ladles of different specifications.

[0022] The driving device includes a driving motor 7. A driving gear 8 is provided at the output end of the driving motor 7. A screw rod 9 and a guide rod 10 extending above the sealing cover 4 are provided at the upper part of the baffle 6. A lifting sleeve 11 cooperating with the driving gear 8 is provided on the screw rod 9. A bearing seat for installing the lifting sleeve 4 is provided on the sealing cover 4.

[0023] Internal threads cooperating with the screw rod 9 are provided on the inner side wall of the lifting sleeve 11. A driven gear 12 meshing with the driving gear 8 is provided on the outer side wall. The driving gear 8 drives the lifting sleeve 11 to rotate, thereby driving the screw rod 9 to lift.

[0024] The number of the guide rods 10 is multiple, and they are evenly distributed along the circumferential direction of the baffle 6. The guide rods 10 can play a role in guiding and limiting during the lifting process, ensuring the stability of the lifting of the baffle 6.

[0025] A heat insulation body 13 is provided at the upper part of the baffle 6. The function of the heat insulation body 13 is to isolate the guide rod 10, the screw rod 9, and the gas pipeline connected to the burner 5 and the fuel delivery pipeline, avoiding thermal corrosion after the baffle 6 descends. The heat insulation body 13 is hemispherical. An annular extension plate 14 is provided at the edge position of the heat insulation body 13. The annular extension plate 14 blocks the flame on the outside and further protects the guide rod 10, the screw rod 9, and the gas pipeline connected to the burner 5.

[0026] The lower part of the sealing cover 4 is provided with a receiving chamber 15. The top of the receiving chamber 15 is provided with a concave that matches the shape of the heat insulation body 13. The concave cooperates with the heat insulation body 13 to play a guiding role. The annular extension plate 14 is attached to the side wall of the receiving chamber 14, which plays a guiding role during the lifting process and can also play a sealing role. The upper end of the annular extension plate is always located within the receiving chamber 15. The maximum descending height of the baffle 6 is the height value of the annular extension plate 14.

[0027] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or device / equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles, or devices / equipment.

[0030] So far, the technical solution of the present utility model has been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. A ladle oxyfuel combustion vertical baking device, comprising a base (1) for placing the ladle, a bracket (2) is arranged on one side of the base (1), an adjusting cantilever (3) is arranged on the top of the bracket (2), and a baking assembly is arranged at the end of the adjusting cantilever (3), characterized in that: The baking assembly comprises a sealing cover (4) and a burner (5); a baffle (6) for mounting the burner (5) is arranged at the lower part of the sealing cover (4); and a driving device for driving the baffle (6) to move longitudinally is arranged at the upper part of the sealing cover (4).

2. The ladle oxyfuel combustion vertical baking device according to claim 1, characterized in that: The driving device comprises a driving motor (7), the output end of the driving motor (7) is provided with a driving gear (8), the upper part of the baffle (6) is provided with a screw rod (9) extending to the top of the sealing cover (4) and a guide rod (10), and the screw rod (9) is provided with a lifting sleeve (11) used in conjunction with the driving gear (8).

3. The ladle oxyfuel combustion vertical baking device according to claim 2, characterized in that: The inner wall of the lifting sleeve (11) is provided with a thread that cooperates with the screw rod (9), and the outer wall is provided with a driven gear (12) that meshes with the driving gear (8).

4. The ladle oxyfuel combustion vertical baking device according to claim 2, characterized in that: The number of the guide rods (10) is plural and they are evenly distributed along the circumferential direction of the baffle (6).

5. The ladle oxyfuel combustion vertical baking device according to claim 1, characterized in that: A heat insulator (13) is arranged on the upper part of the baffle (6); the heat insulator (13) is hemispherical, and an annular extension plate (14) is arranged at the edge of the heat insulator (13).

6. The ladle oxyfuel combustion vertical baking device according to claim 1, characterized in that: The lower part of the sealing cover (4) is provided with a receiving chamber (15), and the top of the receiving chamber (15) is provided with a recess matching the shape of the heat insulator (13).

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